Product markup note (placeholder-free guidance).
Do not duplicate Product JSON-LD that your theme or plugin already outputs. Two Product blocks for one page can conflict.
Shopify: themes such as Dawn print {{ product | structured_data }}. WordPress: WooCommerce prints Product markup; extend it with the woocommerce_structured_data_product filter (see wordpress/geo-schema-plugin-filters.php).
Check the live page with: curl -s URL | grep -c 'application/ld+json'. Replace nothing here; this file has no placeholders.
